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Citation
Meireles, A.M., Fisher, K.H., Colombié, N., Wakefield, J.G., Ohkura, H. (2009). Wac: a new Augmin subunit required for chromosome alignment but not for acentrosomal microtubule assembly in female meiosis.  J. Cell Biol. 184(6): 777--784.
FlyBase ID
FBrf0207439
Publication Type
Research paper
Abstract

The bipolar spindle forms without centrosomes naturally in female meiosis and by experimental manipulation in mitosis. Augmin is a recently discovered protein complex required for centrosome-independent microtubule generation within the spindle in Drosophila melanogaster cultured cells. Five subunits of Augmin have been identified so far, but neither their organization within the complex nor their role in developing organisms is known. In this study, we report a new Augmin subunit, wee Augmin component (Wac). Wac directly interacts with another Augmin subunit, Dgt2, via its coiled-coil domain. Wac depletion in cultured cells, especially without functional centrosomes, causes severe defects in spindle assembly. We found that a wac deletion mutant is viable but female sterile and shows only a mild impact on somatic mitosis. Unexpectedly, mutant female meiosis showed robust microtubule assembly of the acentrosomal spindle but frequent chromosome misalignment. For the first time, this study establishes the role of an Augmin subunit in developing organisms and provides an insight into the architecture of the complex.

PubMed ID
PubMed Central ID
PMC2699157 (PMC) (EuropePMC)
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Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    J. Cell Biol.
    Title
    Journal of Cell Biology
    Publication Year
    1966-
    ISBN/ISSN
    0021-9525
    Data From Reference
    Aberrations (1)
    Alleles (4)
    Genes (9)
    Physical Interactions (3)
    Cell Lines (1)
    Insertions (1)
    Transgenic Constructs (1)